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[QUOTE=tjts1;63837]
Fuel economy isn't everything. If you have the unfortunate experience to to colide with any of the 2003+ cars that use a high percentage of high strength steel, you're toast. I'm not even talking about heavy SUVs. Just normal cars.
Could you tell us more about this new high-strength steel? For the last century, anything affordable traded strength for toughness, and Tough is what counts in a crash. It would not be difficult or expensive to leave more carbon in any steel and harden it to four times the regular strength, but it would shatter like a file on impact.
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There is no excuse for a land vehicle to weigh more than its average payload.
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